Dishwashing machine



April 26, 1927.

- N. H. HENDERSON DISHWASHING MACHINE File d Maroh 12. 1,924

2 Sheets-Sheet 1 INVENTORI.

ATTORNEYS;

N. H. HENDERSON- DISHWASHING MACHINE April 26, 1927. 1,626,194

Filed March 12. 1924 2 Sheets-Sheet 2 W xi &

A TTORNEY.

50 purposes.

Patented Apr. 26, 1927,

UNITED STATES PATENT OFFICE.

NELSON H. HENDERSON, OF SYRACUSE, NEW YORK, ASSIGNOR TO SYRACUSE IN DUSTRIAL GAS 60., OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

DISHWASHING MACHINE.

Application filed March 12, 1924. Serial No. 698,778.

This invention relates to washing machines, and particularly dish washing machines, and has for its object a particularly simple and efficient washing machine which is com act in construction, is readily mountable a jacent a sink, table or other dish suport and-which requires no special rece tacle ibr the 'dishes,'and hence, is not sel -contained with or built into such receptacle. The inventlon cons sts in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference 1s had to the accompanying drawings in WlllCh 16 like characters designate corresponding parts in all the views.

' Figure 1 is a vertical sectional view of a washing machine embodying my invention, the contiguous art of a sink and a receptacle for the dis es to be washed being also :shown.

Figure 2 is a fragmentary front elevation of parts seen in Fig. 1.

Figure 3 is a sectional-view of another form of this-washingmachine.

Figure 4 is a sectional view on line 4-4, Fi 3. igure 5 is a front elevation of parts seen in Fi re 3.

This washing machine comprises generalfrom the outlet opening, a centrifugal pump arranged in juxtaposition to the inlet open- -"'--"ing, and means for actuating the 'pump in combination with a suitable receptacle for dishes separately supported from the pump with no fixed pipe connections between the pump and the receptacle, that is the inlet and outlet pipes can be moved away from the receptacle without it being necessary.to

' uncouple any joints. When the sink is used 4 as the dish receptacle, as shown in Figure 3,

the moving of the lower portion or section of the inlet pipe for the pump and the swinging upwardlyv of the outlet pipe al-v lows the sink .to be used forordinary sink The lower section of the inlet pipe fits with a sliding friction fit into the upper section and can be merely slid up onto the upper section or it may he slid down far enough .to move off the end of the upper section and then hung upf-ilnany convenient the purpose.

" 1 designates the tank, it being usually cylindrical and arranged in upright position in order to occupy a minimum space, and to be conveniently placed relatively to a sink 2 or table or other supportfor a receptacle or pan 3 for the dishes. Although the sink 2 may be used as such receptacle by stopping the drain pipe of the sink.

4 is the inlet in the bottom of the tank 1, and 5 is the inlet conduit or tube depending from the inlet at, and designed to have its lower end located in the sink or the dish receptacle, 3.

6 designates the outlet or discharge opening from the tank 1, the tank being usually provided with two outlets on op osite sides thereof, and 7 is the discharge pipe leading from each outlet and having a nozzle 8 at its end arranged to discharge into' the upper portion of the receptacle 3. The nozzles are arranged opposite each other, so that, they discharge toward each other.

9is a pump, which is usually a rotary centrifugal pump, formed with blades 10, asshown in Fig. 4, the pump being located near. the bottom of the tank 1, concentric with the inlet 4. The pump is actuated by means of the shaft 11, journalled in suitable bearings 9 9 in the tank 1, and extending lengthwise of the tank and coupled at its upper end to the armature shaft of a motor 12 suitably mounted at the upper'end of the tank. Thebearings 9 and 9 are located re: spectively at the top and bottom of the tank and that at the bottom of the tank carried by a bracket 9 projected from the side wall 7 of the tank 1 directly above the rotor. The interior of the tank is divided into inlet and discharge compartments by a partition 13. The partition preferably includes a transversfepportion 14 at its lower end above the pump 9, and anupwardly extending portion terminating below' the upper end of the tank.

The inlet and outlet-compartments are designated respectiveiy outlet opening 6 is located near the bottom of' the compartment 16; '9that is near the transverse portion 14 of the pa tition 13, and the discharge ends of the conguit pipes 7 are usually swivelled at 17 in or er that they may be swung from the position*- shown in Fig. 1, upwardly into the position shown inbroken lines Fig. 1, and in full lines, Fig. 2.

15 and 16. The

Suitable means for priming the pump in order to start the circulation of the water is provided, this means comprising a pipe 18 arranged to discharge in the vicinity of the pump 9 and connected by a coupling 19 to the faucet 20. By turning on the faucet, water will be supplied to the pump until the circulation starts after which the water supply may be turned off. I

The receptacle 3 in Figure 1 is shown as formed with an open mesh bottom 21, and a pan in which the receptacle rests. The pan 22 may be provided with a drain opening closed by a suitable manually operable valve, which is shown as operated by a spring pressed lever 21-. In Figure 3 the receptacle is shown as being formed by the sink, that is, no pan or similar receptacle is used.

In operation the water is placed in-thc pan 22 and the pump started, causing the water to be circulated from the pan up over the top of the partition 13 into the outlet compartment 16, thence, by gravity through the pipes 7 and again into the pan.

When the pan is filled with water the circulation is practically continuous, but by having the pan half filled with water or filled just above the lower end of the inlet pipe 5, the water will be alternately lowered and raised in the pan 3 and such fluctuation facilitates the washing of the dishes.

The operation of raising and lowering the water in the receptacle may be accomplished as follows. In Fig. 1, the pump draws up water faster than. the nozzles will discharge it. This results in the pump emptying the receptacle and drawing in air. The suction is destroyed and operation of the pump stops momentarily or until the receptacle again fills or partly fills. This also results in a variation of the force of discharge from the nozzle, so that, all points in the receptacle are covered.

When most of the water has returned to the receptacle the pump automatically primes itself, probably by the water left in the tank and the operation is repeated.

l/Vhen the dishes are washed the lever 21 may be operated to let the cleansing fluid drain out and the tank supplied with the rinsing water by filling the pan. 22.

This may be done by filling the pan from the faucet or the tank through the priming hose 18.

At 31 is shown an extension of the suction pipe which may be raised or disconnected to allow the receptacle for dishes to be easily removed.

At 33 are shown battles or extensions to better distribute the water over the dishes in the receptacle.

It will be understood that any suit able pan may be used in connection with this washing machine. In fact the sink 2 may be utilized as the pan in case the drain pipe is closed or a suitable pan may be supported on a table or bench under the tank 1.

This washing machine is particularly advantageous as it has no receptacle self-contained therewith, (it being possible to use the ordinary dish pan or kitchen sink) and further can be mounted in any convenient location relatively to the sink or table, occupies very little space, and consists ofbut a few mechanical moving parts without valves or stutting boxes. The construction of the pump and its pressing features forms the subject matter of my application Serial No. 751,273, filed November 21, 192st, it being a division of this case.

-VVhat I claim is:

1. In a dish washing machine, the combination 'with a receptacle for the articles to be washed, of a tank located above the receptacle and supported independently thereof, the tank having an inlet pipe in its bottom for extending into the receptacle, and an outlet pipe above its bottom and arranged to discharge into the receptacle, a centrifugal pump rotor arranged in the tank between the inlet. and outlet pipes where they open into the tank, and being located adjacent the inlet, the pump rotor being mounted to rotate about a vertical axis in line with the inlet pipe and being spacedapart throughout its circumference from the wall of the tank, whereby an annular space is provided entirely around the pump, said space being open to discharge the water therefrom entirely around the pump, and means for actuating the pump, the tank constituting a casing for the pump.

2. In a dish washing machine-,the combination with a receptacle for the articles to be washed, of a tank located above the receptacle and supported independently thereof, the tank having an inlet pipe in its bottom for extending into the receptacle, and an outlet pipe above its bottom arran ed to discharge into the receptacle, a centrifugal pump rotor arranged in the tank between the inlet and outlet pipes where they open into the tank, and being adjacent the inlet pipe, the pump rotor being mounted to rotate about a vertical axis in line with the inlet pipe and being spaced-apart throughout its circumference from the wall of the tank, whereby an annular space is provided entirely around the rotor, the tank constituting a pump casing, and an upright shaft extending lengthwise of the tank, upon which shaft the pump rotor is mounted, and a motor supported at the upper end of the tank in axial alinement with said shaft, the armature shaft of the motor being a continuation of the former shaft.

3. A dish washing machine. comprising two units supported entirely independently of each other. one unit being a portable receptacle for the dishes tobe washed, and the co I pump is mounted, a motor carried by jbination' with a receptacle for holding other a tank arranged above the receptacle and having an intake pipe extending into the receptacle, and an outlet ipe arranged to discharge into the receptac e, a centrifugal pump rotor mounted in the tank adjacent the inlet and in line therewith, the pump rotor, being spaced-apart throughout its circumference from the wall of the tank leaving an annular space around the pum the tank servin as a pump casing, a sha t supported in tie tank and on which tfie t e tank and connected to the shaft, the tank, motor, rotor and the inlet and outlet pipes being self-contained with the tank and being independent of the receptacle and the pipes being arranged to drain all the water from the tank and ipes when the rotor is idle.

4. In a dis]. washing machine, the 0011x11- t e dishes to be washed, of a pump including a casin and a rotor in the casing, intake and ischarge conduits leading respectively to and from the suction and pressure sides of the pump, the conduits being supported by the casing and having their other ends free, the intake conduit having its free end provided with a detachable telescoping lower 7 section.

5. In a dish washing machine, the combination with areceptacle for holding the dishes to be Washed, of a fluid circulating device, comprising a tank, a pu'm rotor in the tank, intake and discharge con uits leadconnected to the discharge conduit bein about a tank to swing relative-y thereto transverse horizontal axis.

6. In a dish washing machine, a dish washing receptacle, a circulating pump arranged above the dish receptacle, inlet and outlet pipes depending from the pump into the receptacle, and having their lower ends free whereby when the pump is idle the fluid drains from the pump and said pipes into the receptacle.

7; A dishwashing machine including a casing adapted to be supported independently of a dish receiving receptacle and provided at the bottom with an inlet and having an inlet tube extending from the inlet and rigidly connected with the casing and adapted to be inserted into and withdrawn from the dish receiving receptacle, said casing being also provided with a lateral outlet and having a rigid tubular member ivotally connected at its inner end with the casing and adapted to swing into and out of operative position with relation to the dish'receiving receptacle and provided at its outer end with a discharge nozzle, and pumping means located within the casing and associated with the inlet.

In testimony whereof, I have hereunto signed my name, at Syracuse, 1n the'count of Onondaga, and State of New York, thls 6th day of March, 1924.

NELSON H. HENDERSON. 

